The fastest way to eliminate BV smell is with prescription antibiotics, which typically start reducing the odor within 2 to 3 days of your first dose. There is no reliable way to permanently get rid of the smell without treating the underlying bacterial overgrowth, but there are things you can do right now to manage the odor while you get treatment started.
What Causes the Smell
Bacterial vaginosis happens when the balance of bacteria in the vagina shifts. Normally, beneficial bacteria keep the environment slightly acidic (below a pH of 4.5), which prevents other organisms from thriving. When that balance tips, anaerobic bacteria, the kind that grow without oxygen, multiply rapidly. These bacteria break down amino acids and produce compounds called biogenic amines, specifically putrescine, cadaverine, and trimethylamine. Those chemicals are directly responsible for the strong, fishy odor associated with BV.
The smell is often more noticeable after sex or during your period, because semen and menstrual blood are both alkaline. That rise in pH triggers the release of more of those amine compounds from the bacterial overgrowth, making the odor temporarily stronger.
Prescription Treatment Is the Fastest Fix
Antibiotics are the only proven way to clear BV and its smell reliably. The CDC recommends three first-line options: an oral antibiotic taken twice daily for 7 days, a vaginal gel applied once daily for 5 days, or a vaginal cream used at bedtime for 7 days. All three target the anaerobic bacteria causing the odor.
Most people notice the smell fading within 2 to 3 days of starting treatment, even though the full course takes 5 to 7 days. Finishing the entire course matters. Stopping early because the smell is gone increases the chance of the bacteria bouncing back. There is also a single-dose oral option that some providers prescribe as an alternative, which is the most convenient but not always covered by insurance.
If you can’t get to a provider immediately, telehealth appointments can often get you a prescription the same day. Many urgent care clinics also diagnose and treat BV in a single visit.
What You Can Do Right Now
While you wait for antibiotics to work, or while you’re getting an appointment, a few practical steps can reduce how noticeable the odor is:
- Wear cotton underwear. Breathable fabric reduces moisture buildup, which limits the warm, low-oxygen environment that feeds anaerobic bacteria.
- Avoid scented products near the vulva. Scented soaps, sprays, and wipes can further irritate the vaginal lining and worsen the imbalance. Wash externally with warm water only, or a mild, fragrance-free cleanser on the outer skin.
- Change out of damp clothing quickly. Sitting in sweaty workout clothes or a wet swimsuit creates ideal conditions for bacterial growth.
- Use unscented panty liners. If discharge is contributing to the odor, a thin liner changed frequently can help you feel fresher throughout the day.
These measures manage the symptom, not the cause. They won’t cure BV on their own, but they can make a real difference in how you feel while treatment kicks in.
Why Douching Makes It Worse
If your instinct is to flush the vagina with water or a vinegar solution, resist it. Douching even once a month increases the risk of developing BV by 1.4 times. Women who douched within a week of being studied had 2.1 times the risk. Douching strips away the protective, hydrogen peroxide-producing bacteria that keep the vagina acidic. That disruption allows the exact anaerobic bacteria responsible for BV to overgrow further. The smell may briefly seem better right after douching, but you’re setting yourself up for a stronger recurrence.
The same goes for inserting herbs, essential oils, garlic, or any other home remedy into the vagina. The World Health Organization specifically flags intravaginal insertion of non-medical products as a risk factor for BV.
Boric Acid Suppositories
Boric acid vaginal suppositories (600 mg) are available over the counter and sometimes recommended for recurrent BV, particularly after a standard antibiotic course. They work by lowering vaginal pH, making the environment less hospitable to the odor-causing bacteria. A typical course runs up to 21 days.
Boric acid is not a first-line treatment and won’t work as fast as prescription antibiotics for an active infection. It’s most useful as a follow-up strategy if BV keeps coming back. It should never be taken orally, as it is toxic when swallowed. If you’re pregnant, skip boric acid entirely.
Probiotics for Prevention
Certain strains of Lactobacillus, particularly L. crispatus, are the dominant “good” bacteria in a healthy vagina. A vaginal probiotic containing L. crispatus (at a dose of 2 billion colony-forming units) has been studied specifically for preventing BV recurrence. In clinical trials, it was applied vaginally daily for 5 days after antibiotic treatment, then twice weekly for 10 weeks.
Oral probiotics marketed for vaginal health are widely available, but the evidence is much stronger for vaginally applied strains. If you’re dealing with recurring BV, a vaginal probiotic used after completing antibiotics is the most evidence-backed approach. Probiotics alone won’t clear an active BV infection or eliminate the smell quickly, but they can help keep it from returning.
When BV Keeps Coming Back
Recurrence is one of the most frustrating aspects of BV. Roughly half of people treated for BV experience it again within 12 months. The WHO notes that antibiotic treatment alone is less effective when it isn’t paired with changes to reduce risk factors. The most impactful changes are stopping douching, avoiding scented vaginal products, and using condoms with new or multiple sexual partners (BV is not a sexually transmitted infection, but sexual activity can shift vaginal bacteria).
If you’ve been treated more than twice in a year, ask your provider about an extended or suppressive treatment plan. This might involve a longer antibiotic course followed by boric acid or vaginal probiotics to maintain the bacterial balance. Treating the smell “fast” is possible each time, but breaking the cycle of recurrence is what ultimately solves the problem for good.